c# thoughtworks qrcode Lesson 1: Creating AJAX-Enabled Web Forms in C#

Creation QR Code JIS X 0510 in C# Lesson 1: Creating AJAX-Enabled Web Forms

Lesson 1: Creating AJAX-Enabled Web Forms
Drawing QR Code 2d Barcode In Visual C#
Using Barcode creator for .NET framework Control to generate, create QR-Code image in VS .NET applications.
www.OnBarcode.com
QR-Code Decoder In Visual C#.NET
Using Barcode reader for VS .NET Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
ChAPTER 9
Bar Code Maker In Visual C#
Using Barcode generation for Visual Studio .NET Control to generate, create barcode image in VS .NET applications.
www.OnBarcode.com
Barcode Scanner In C#.NET
Using Barcode reader for VS .NET Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
Quick Check
Printing Denso QR Bar Code In VS .NET
Using Barcode printer for ASP.NET Control to generate, create QR Code JIS X 0510 image in ASP.NET applications.
www.OnBarcode.com
Draw QR Code In .NET Framework
Using Barcode encoder for .NET framework Control to generate, create QR Code JIS X 0510 image in .NET framework applications.
www.OnBarcode.com
1 . Which of the AJAX Extensions controls allow you to display an update to a portion
Denso QR Bar Code Drawer In Visual Basic .NET
Using Barcode creator for Visual Studio .NET Control to generate, create QR Code JIS X 0510 image in VS .NET applications.
www.OnBarcode.com
QR Maker In Visual C#.NET
Using Barcode creation for VS .NET Control to generate, create QR Code image in .NET framework applications.
www.OnBarcode.com
of a webpage
Paint UCC - 12 In Visual C#
Using Barcode encoder for Visual Studio .NET Control to generate, create GTIN - 12 image in .NET framework applications.
www.OnBarcode.com
Bar Code Generator In C#.NET
Using Barcode encoder for Visual Studio .NET Control to generate, create barcode image in .NET applications.
www.OnBarcode.com
2. If you were building a user control that required ASP.NET AJAX functionality,
Create EAN / UCC - 14 In C#.NET
Using Barcode printer for .NET Control to generate, create EAN128 image in Visual Studio .NET applications.
www.OnBarcode.com
Drawing EAN-8 Supplement 5 Add-On In C#
Using Barcode drawer for Visual Studio .NET Control to generate, create European Article Number 8 image in .NET applications.
www.OnBarcode.com
which control would you add to the user control markup
Make GTIN - 12 In None
Using Barcode generation for Software Control to generate, create UPC-A Supplement 5 image in Software applications.
www.OnBarcode.com
PDF-417 2d Barcode Encoder In .NET Framework
Using Barcode encoder for Reporting Service Control to generate, create PDF417 image in Reporting Service applications.
www.OnBarcode.com
3. How do you indicate that a control outside an UpdatePanel should trigger a
EAN13 Decoder In C#
Using Barcode scanner for .NET Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
Bar Code Drawer In Visual Studio .NET
Using Barcode encoder for ASP.NET Control to generate, create bar code image in ASP.NET applications.
www.OnBarcode.com
partial-page update to the UpdatePanel
Data Matrix Creation In Visual Basic .NET
Using Barcode generation for VS .NET Control to generate, create Data Matrix 2d barcode image in Visual Studio .NET applications.
www.OnBarcode.com
Printing GTIN - 13 In None
Using Barcode creator for Font Control to generate, create EAN13 image in Font applications.
www.OnBarcode.com
Quick Check Answers
Universal Product Code Version A Creation In None
Using Barcode maker for Online Control to generate, create UPC Code image in Online applications.
www.OnBarcode.com
Scanning PDF-417 2d Barcode In Visual Basic .NET
Using Barcode decoder for .NET framework Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
1 . The contents inside an UpdatePanel are updated independently of the rest of the
page when a partial-page update is performed.
2. You would have to add a ScriptManagerProxy control to the user control to ensure that
the user control can work with pages that already contain a ScriptManager control.
3. To connect a control that is outside an UpdatePanel to an UpdatePanel, you register
it as an AsyncPostBackTrigger in the Triggers section of the UpdatePanel markup.
Pr ActIcE
building an AjAX-Enabled Webpage
In this practice, you create a webpage and enable partial-page updates. You also add support for notifying the user when the application connects to the server. Finally, you add a Timer control to periodically update a second portion of your page.
oN the CoMpaNIoN MedIa
If you encounter a problem completing an exercise, you can find the completed projects in the samples installed from this book s companion CD. For more information about the project files and other content on the CD, see Using the Companion Media in this book s Introduction.
E xErcIsE 1 Enabling Partial-Page Updates
In this exercise, you create a new ASP.NET website and define support for partial-page updates.
1. 2.
Open Visual Studio and create a new ASP.NET website named AjaxExample in either C# or Visual Basic. Add the northwnd.mdf database file to the App_Data folder of the site. The database file can be found in the sample files installed from the CD inside the App_Data folder for this exercise. This database file is a Microsoft SQL Server Express database that contains a copy of the Northwind sample database.
ChAPTER 9
Working with Client-Side Scripting, AJAX, and jQuery
3. 4. 5.
Open Default.aspx in Source view. Delete the contents inside the BodyContent control. Add a ScriptManager control to the body of the page from the AJAX Extensions tab of the Toolbox. Add text to the page to serve as a title followed by a horizontal line. Your markup inside the BodyContent control might look as follows.
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent"> <asp:ScriptManager ID="ScriptManager1" runat="server"> </asp:ScriptManager> <h2>Suppliers</h2> <hr /> </asp:Content>
6. 7.
Add an AJAX UpdatePanel control to the page from the AJAX Extensions tab of the Toolbox. Switch to Design view and add a GridView control inside the UpdatePanel. Design view provides UI support for binding the GridView to the database table, which you will do in the next step. Bind the GridView to the vendors stored in the Suppliers table in the northwnd.mdf database. To start, click the smart tag in the upper-right section of the GridView control to open the GridView Tasks window. From here, click the ChooseDataSource list and select New Data Source. This opens the Data Source Configuration Wizard.
a. In the first step of the wizard, select Database and enter the ID for the data source
as sqlDatasourcenwd. Click OK to open the Choose Your Data Connection page.
b. Next, select northwnd.mdf from the Connection list and click Next. (If the
northwind.mdf option does not appear in the Connection list, select New Connection and create a connection to the northwnd.mdf file.)
On the next page, choose to save the connection string and name it nwdConnectionstring. Click Next to continue. fields: SupplierID, CompanyName, ContactName, City, and Phone. Sort the query by the CompanyName field (click ORDER BY and select CompanyName in the Sort By list). Click Next to continue, and then close the wizard by clicking Finish.
d. Next, configure the SQL statement to access the Suppliers table. Select the following
9. 10.
Again, open the GridView Tasks window by using the smart tag. Select the Enable Paging check box. Run the application and view the Default.aspx page in a browser. Click the data page numbers to move between data pages. Notice that only the grid is being updated and not the entire page; this is because the UpdatePanel control wraps requests for data and replaces the markup for the grid rather than refreshing the entire page.
Lesson 1: Creating AJAX-Enabled Web Forms
ChAPTER 9
Next, add a section at the top of the form (outside of the UpdatePanel) that allows the user to enter a new contact and have it added to the database. Your markup code might look as follows.
<div style="margin: 20px 0px 20px 40px"> Company<br /> <asp:TextBox ID="TextBoxCompany" runat="server" Width="200"></asp:TextBox> <br /> Contact Name<br /> <asp:TextBox ID="TextBoxContact" runat="server" Width="200"></asp:TextBox> <br /> City<br /> <asp:TextBox ID="TextBoxCity" runat="server" Width="200"></asp:TextBox> <br /> Phone<br /> <asp:TextBox ID="TextBoxPhone" runat="server" Width="200"></asp:TextBox> <br /> <asp:Button ID="ButtonSave" runat="server" Text="add" style="margin-top: 15px" onclick="ButtonSave_Click" /> </div>
Next, define an InsertQuery for the SqlDataSource control. You do so by selecting the SqlDataSource control from the Default.aspx page in Design view. Then click the ellipsis button next to the InsertQuery property in the Properties pane. This will launch the Command And Parameter Editor.
Copyright © OnBarcode.com . All rights reserved.